Romex and breaker switches


I did a search and have read previous posts, but I still have some questions. I had an electrician install dedicated lines in my listening room when we built our house 20 years ago. I bought simple hospital grade outlets from a big box store and did not specify the gauge of the romex or anything else. I need to clear out my dedicated listening room soon for new hardwood to be installed and figured now would be a good time to revisit and improve my dedicated lines. I have already bought a pair of Oyaide R1 duplexes and intend to have them installed side by side behind my equipment rack. My question is-is there a particular variation of 10 gauge romex that would be best? I have looked and there are quite a few variations including 10-2 and 10-3 and I have no idea what to buy or for that matter, if some other wire that would do the job and not be prohibitively expensive presents a better option. I will need a 20 foot run for each duplex. Also, can someone help me as to whether the breaker switch on my panel matters much and whether I should opt for 20A, 30A, or other? I now know that all runs from my duplexes to the panel should be to the same leg. I will make sure that happens. Any other recommendations or advice about romex/wire to use and breaker switches given my decision to go with Oyaide R1's would be most appreciated. 
128x128fsonicsmith

Showing 1 response by chaz

Do you know Ohm’s Law?
 What voltage does an Audio Amplifier run at?
What is the Impedance of your speakers?
What would be your total (Maximum) current draw, for this circuit ( voltage )?
Then do a direct conversion from this voltage to 120 volt circuit, what is the multiplier?
What is the maximum current draw at 120 volts direct relation multiplier.

Certified Electrician work below prefered -

Stay away from big wire for 120 volt home plugs, they are not constructed physically for wire sizes over 12 gauge, no greater than 20 amps, danger!
 I’m sure that worst case scenario you would ever draw more that 13 amps at 120 volt.
Make sure all plugs are on the same buss bar in the panel, or if you do run a 20 amp circuit, wire (12/2 prefered forcing you not to have the extra hot wire to split the red and black onto seperate busses, which is a potential noise disaster), 20 amp single pole Breaker and 20 amp 120 volt plug ( or plugs as you can configure 2 duplex 20 amp plugs on the same 12/2 wire and 20 amp single pole breaker).
 Ground loop hum could be a disaster negating any benefits to having all this powerful equipment. Can be caused by cable satelite or cable TV coax, all those multi switch and amplified devices should be on the same bus also. Your cable company or satalite dealer will supply you with a coax ground isolation device, as this is most times the main culprit for audio system noise.
 Stranded copper not required ( or allowed most times) for 60 hz electrical wire.
Audio circuit conversion done by your amplifier creates the frequencies needed for audio so stranded wire for skin effect at these various frequencies is probably a good idea. ( more conductor surface area). Depending on the frequency electrical elements travel on the surface of the wire only.